如何将子项添加到ListView？

Question

我正在尝试使用子项目工作的Listview获得最简单的示例.但是这段代码:

private void button1_Click(object sender, EventArgs e) {
    listView1.Groups.Add(new ListViewGroup("Kannst du mich sehen?", HorizontalAlignment.Left));
    string[] strArr = new string[4] { "uno", "dos", "twa", "quad" };
    for (int i = 0; i < strArr.Length; i++)
    {
        ListViewItem lvi = new ListViewItem(strArr[i]);
        listView1.Items.Add(lvi);
        lvi.SubItems.Add("Ciao, Baby!");
        listView1.Items[i].Group = listView1.Groups[0];
    }
}

...不显示子项("Ciao,Baby!").表明:

Kannst du mich sehen?
---------------------
uno   dos   twa   quad

......但我希望它是:

Kannst du mich sehen?
---------------------
uno Ciao, Baby!
dos Ciao, Baby!
twa Ciao, Baby!
quad    Ciao, Baby!

更奇怪的是(在我看来),我明白了:

Default
-------
uno dos twa quad    uno dos twa quad

FIRST
-----
uno dos twa quad

...使用此代码:

private void button2_Click(object sender, EventArgs e) {
    string[] strArrGroups = new string[3] { "FIRST", "SECOND", "THIRD" };
    string[] strArrItems = new string[4] { "uno", "dos", "twa", "quad" };
    for (int i = 0; i < strArrGroups.Length; i++)
    {
        listView1.Groups.Add(new ListViewGroup(strArrGroups[i], HorizontalAlignment.Left));
        for (int j = 0; j < strArrItems.Length; j++) {
            ListViewItem lvi = new ListViewItem(strArrItems[j]);
            listView1.Items.Add(lvi);
            lvi.SubItems.Add("Hasta la Vista, Mon Cherri!");
            listView1.Items[j].Group = listView1.Groups[i];
        }
    }
}

UPDATE

如果你问我,ListView的View属性会有点奇闻趣事:

默认的" LargeIcon "设置最初显示(并且SmallIcon具有相同的效果)." 细节 "只给我组头标题(没有项目)" 列表 "给我项目(一行一行,我想要),但没有组/标题" 平铺 "给我:

Kannst du mich sehen?
---------------------
uno     dos
twa     quad

...使用button1的代码和:

Default
---------------------
uno     dos
twa     quad
uno     dos
twa     quad

FIRST
---------------------
uno     dos
twa     quad

...用button2的代码

或者:

1) I'm stupid
2) ListView is very counterintuitive
-or
3) Nobody ever wants to use the ListView the way I'm trying to use it...if that's the case, should I be using a different control instead?

~~~侧面(或底部)问题:由于我住在StackOverflow上,是否有可能成为双重公民,这样做是否有任何税收优惠？

Answer 1

这对我有用：

listView1.Columns.Add("Col1");
listView1.Columns.Add("Col2");

string[] strArrGroups = new string[3] { "FIRST", "SECOND", "THIRD" };
string[] strArrItems = new string[4] { "uno", "dos", "twa", "quad" };
for (int i = 0; i < strArrGroups.Length; i++)
{
    int groupIndex = listView1.Groups.Add(new ListViewGroup(strArrGroups[i], HorizontalAlignment.Left));
    for (int j = 0; j < strArrItems.Length; j++)
    {
        ListViewItem lvi = new ListViewItem(strArrItems[j]);
        lvi.SubItems.Add("Hasta la Vista, Mon Cherri!");
        listView1.Items.Add(lvi);
        listView1.Groups[i].Items.Add(lvi);
    }
} 

事实证明，您必须将项目添加到组中，而不是在项目上设置组属性，如其他问题所示。非常非常奇怪。

结果是：

在.Net 4、WinForms、VS2010 中测试